<template>
  <div
    class="user-info-head"
    @click="editCropper()"
  >
    <img
      :src="options.img"
      title="点击上传头像"
      class="img-circle img-lg"
    >
  </div>
  <el-dialog
    v-model="open"
    :title="title"
    width="800px"
    append-to-body
    @opened="modalOpened"
    @close="closeDialog"
  >
    <el-row :gutter="20">
      <el-col :xs="24" :md="12" :style="{ height: '350px' }">
        <vue-cropper
          v-if="visible"
          ref="cropper"
          :img="options.img"
          :info="true"
          :auto-crop="options.autoCrop"
          :auto-crop-width="options.autoCropWidth"
          :auto-crop-height="options.autoCropHeight"
          :fixed-box="options.fixedBox"
          @realTime="realTime"
        />
      </el-col>
      <el-col :xs="24" :md="12" :style="{ height: '350px' }">
        <div class="avatar-upload-preview">
          <img :src="options.previews.url" :style="options.previews.img">
        </div>
      </el-col>
    </el-row>
    <br>
    <el-row>
      <el-col :lg="2" :md="2">
        <el-upload
          action="#"
          :http-request="requestUpload"
          :show-file-list="false"
          :before-upload="beforeUpload"
        >
          <el-button>
            选择
            <el-icon class="el-icon--right"><Upload /></el-icon>
          </el-button>
        </el-upload>
      </el-col>
      <el-col :lg="{ span: 1, offset: 2 }" :md="2">
        <el-button icon="Plus" @click="changeScale(1)" />
      </el-col>
      <el-col :lg="{ span: 1, offset: 1 }" :md="2">
        <el-button icon="Minus" @click="changeScale(-1)" />
      </el-col>
      <el-col :lg="{ span: 1, offset: 1 }" :md="2">
        <el-button icon="RefreshLeft" @click="rotateLeft()" />
      </el-col>
      <el-col :lg="{ span: 1, offset: 1 }" :md="2">
        <el-button icon="RefreshRight" @click="rotateRight()" />
      </el-col>
      <el-col :lg="{ span: 2, offset: 6 }" :md="2">
        <el-button type="primary" @click="uploadImg()">提 交</el-button>
      </el-col>
    </el-row>
  </el-dialog>
</template>

<script setup>
  import 'vue-cropper/dist/index.css'
  import { VueCropper } from 'vue-cropper'
  import { uploadAvatar } from '@/api/system/user'
  import useUserStore from '@/store/modules/user'

  const userStore = useUserStore()
  const { proxy } = getCurrentInstance()

  const open = ref(false)
  const visible = ref(false)
  const title = ref('修改头像')

  //图片裁剪数据
  const options = reactive({
    img: userStore.avatar, // 裁剪图片的地址
    autoCrop: true, // 是否默认生成截图框
    autoCropWidth: 200, // 默认生成截图框宽度
    autoCropHeight: 200, // 默认生成截图框高度
    fixedBox: true, // 固定截图框大小 不允许改变
    previews: {} //预览数据
  })

  /** 编辑头像 */
  function editCropper() {
    open.value = true
  }
  /** 打开弹出层结束时的回调 */
  function modalOpened() {
    visible.value = true
  }
  /** 覆盖默认上传行为 */
  function requestUpload() {}
  /** 向左旋转 */
  function rotateLeft() {
    proxy.$refs.cropper.rotateLeft()
  }
  /** 向右旋转 */
  function rotateRight() {
    proxy.$refs.cropper.rotateRight()
  }
  /** 图片缩放 */
  function changeScale(num) {
    num = num || 1
    proxy.$refs.cropper.changeScale(num)
  }
  /** 上传预处理 */
  function beforeUpload(file) {
    if (file.type.indexOf('image/') == -1) {
      proxy.$modal.msgError('文件格式错误，请上传图片类型,如：JPG，PNG后缀的文件。')
    } else {
      const reader = new FileReader()
      reader.readAsDataURL(file)
      reader.onload = () => {
        options.img = reader.result
      }
    }
  }
  /** 上传图片 */
  function uploadImg() {
    proxy.$refs.cropper.getCropBlob(data => {
      let formData = new FormData()
      formData.append('avatarfile', data)
      uploadAvatar(formData).then(response => {
        open.value = false
        options.img = import.meta.env.VITE_GLOB_APP_BASE_API + response.imgUrl
        userStore.avatar = options.img
        proxy.$modal.msgSuccess('修改成功')
        visible.value = false
      })
    })
  }
  /** 实时预览 */
  function realTime(data) {
    options.previews = data
  }
  /** 关闭窗口 */
  function closeDialog() {
    options.img = userStore.avatar
    options.visible = false
  }
</script>

<style lang="scss" scoped>
  .user-info-head {
    position: relative;
    display: inline-block;
    border-radius: 50%;
    overflow: hidden;
    width: 140px;
    height: 140px;
  }

  .user-info-head:hover:after {
    content: '+';
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    color: #eee;
    background: rgba(0, 0, 0, 0.5);
    font-size: 32px;
    font-style: normal;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    cursor: pointer;
    line-height: 140px;
    border-radius: 50%;
  }
  .avatar-upload-preview {
    overflow: hidden;
    width: 100%;
    height: 100%;
  }
</style>
